update ngraph version

[baojun-nervana]

to resolve ngraph test hanging issue on centos6 #15599
It was due to incompatible glibc on centos6

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[tensor-tang]

to resolve ngraph test hanging issue on centos6

Thanks @baojun-nervana , but seem #15599 has been solved #16447 , so what is the hanging issue?

[baojun-nervana]

@tensor-tang The hanging issue was reported by @luotao1, but I wasn't able to reproduce the issue before. Recently I was finally able to reproduce it with manylinux docker and resolve it.
@luotao1 's comment:
#15599 (comment)

[luotao1]

-- extern_ngraph configure command succeeded.  See also /Paddle/manylinux1_build/third_party/ngraph/src/extern_ngraph-stamp/extern_ngraph-configure-*.log
[ 42%] Performing build step for 'extern_ngraph'
Scanning dependencies of target ext_mkldnn
Scanning dependencies of target ext_json
Scanning dependencies of target ext_eigen
Scanning dependencies of target ext_gtest
[  0%] Creating directories for 'ext_mkldnn'
[  0%] Creating directories for 'ext_json'
[  0%] Creating directories for 'ext_eigen'
[  1%] Creating directories for 'ext_gtest'
[  1%] No download step for 'ext_mkldnn'
[  2%] Performing download step (git clone) for 'ext_json'
[  2%] Performing download step (git clone) for 'ext_eigen'
[  2%] Performing download step (git clone) for 'ext_gtest'
[  2%] No patch step for 'ext_mkldnn'
[  3%] No update step for 'ext_mkldnn'
Initialized empty Git repository in /Paddle/manylinux1_build/third_party/ngraph/src/extern_ngraph-build/json/src/ext_json/.git/
Initialized empty Git repository in /Paddle/manylinux1_build/third_party/ngraph/src/extern_ngraph-build/eigen/src/ext_eigen/.git/
Initialized empty Git repository in /Paddle/manylinux1_build/third_party/ngraph/src/extern_ngraph-build/gtest/src/ext_gtest/.git/
[  3%] No configure step for 'ext_mkldnn'
[  4%] No build step for 'ext_mkldnn'
[  5%] No install step for 'ext_mkldnn'
[  5%] Completed 'ext_mkldnn'
[  5%] Built target ext_mkldnn
Note: checking out 'release-1.8.1'.

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HEAD is now at 2fe3bd9... Merge pull request #1433 from dsacre/fix-clang-warnings
[  6%] No patch step for 'ext_gtest'
[  6%] No update step for 'ext_gtest'
[  6%] Performing configure step for 'ext_gtest'
-- The C compiler identification is GNU 4.8.2
-- The CXX compiler identification is GNU 4.8.2
-- Check for working C compiler: /opt/rh/devtoolset-2/root/usr/bin/cc
-- Check for working C compiler: /opt/rh/devtoolset-2/root/usr/bin/cc -- works
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Detecting C compile features
-- Detecting C compile features - done
-- Check for working CXX compiler: /opt/rh/devtoolset-2/root/usr/bin/c++
-- Check for working CXX compiler: /opt/rh/devtoolset-2/root/usr/bin/c++ -- works
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Detecting CXX compile features
-- Detecting CXX compile features - done
-- Found PythonInterp: /usr/bin/python (found version "2.6.6")
-- Looking for pthread.h
-- Looking for pthread.h - found
-- Looking for pthread_create
-- Looking for pthread_create - not found
-- Check if compiler accepts -pthread
-- Check if compiler accepts -pthread - yes
-- Found Threads: TRUE
-- Configuring done
-- Generating done
-- Build files have been written to: /Paddle/manylinux1_build/third_party/ngraph/src/extern_ngraph-build/gtest/build
[  6%] Performing build step for 'ext_gtest'
Scanning dependencies of target gtest
[ 12%] Building CXX object googlemock/gtest/CMakeFiles/gtest.dir/src/gtest-all.cc.o
[ 25%] Linking CXX static library libgtest.a
[ 25%] Built target gtest
Scanning dependencies of target gtest_main
Scanning dependencies of target gmock
[ 37%] Building CXX object googlemock/gtest/CMakeFiles/gtest_main.dir/src/gtest_main.cc.o
[ 50%] Building CXX object googlemock/CMakeFiles/gmock.dir/src/gmock-all.cc.o
[ 62%] Linking CXX static library libgtest_main.a
[ 62%] Built target gtest_main
[ 75%] Linking CXX static library libgmock.a
[ 75%] Built target gmock
Scanning dependencies of target gmock_main
[ 87%] Building CXX object googlemock/CMakeFiles/gmock_main.dir/src/gmock_main.cc.o
[100%] Linking CXX static library libgmock_main.a
[100%] Built target gmock_main
[  6%] No install step for 'ext_gtest'
[  6%] Completed 'ext_gtest'
[  6%] Built target ext_gtest

Do we need ext_mkldnn, ext_json, ext_eigen and ext_gtest?
To make the third_party as small as possible

• ext_mkldnn, ext_eigencould not be git clone again since we have already mkldnn.cmake and eigen.cmake?
• ext_json, and ext_gtest could be removed since we don't need it?

[luotao1]

LGTM！I test the ctest -R test_mul_ngraph -V on manylinux image, it runs OK.

[luotao1]

@baojun-nervana #16990 (comment)

[baojun-nervana]

@luotao1 ext_mkldnn is just a target name. We use paddle mkldnn. We need json for ngraph debug purpose to dump the graph. We can look into using shared eigen and removing gtest.